In: MVS Interactive Problem Control System (IPCS) Customization
Version 2 Release 3  SA23-1383-30

I read:
TOD Clock Service
    The time-of-day (TOD) clock service provides a caller, including your exit 
routine,
    with a TOD clock image. In the clock image, bit 0 is set on to allow the 
service to
    handle values from May 11,1971, at 11:56:53.685248 to January 25, 2114, at
    11:50:41.055743.

???
But in PoOps I see
    ...
    If the programming support uses the standard epoch, bit 0 of the clock 
remains one
    through the years 1972-2041. (Bit 0 turned on at 11:56:53.685248 (UTC) May 
11, 1971.)

I'm inclined to believe the latter, and that Bit 0 returns to 0, not 1, in 
September, 2042.
Setting bit 0 on results in values of x'8000...' to x'FFF...'.  These 
correspond to dates
from 1971 to 2042, never reaching 2114.

Is there an error in the IPCS doc?

-- gil

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